body{
    background: #bed8db;
}
.logo{
    background: url("../images/logo2.png") no-repeat ;
    /*width: 720px;*/
    height: 97px;
    background-size: auto 140px;
    display: block;
    margin-left: calc(50% - 289px/2);
    /*margin-top: 10px;*/
}
.content-input {
    /*background-color: #218a86;*/
    border: #218a86 solid 3px;
    border-radius: 2em 2em;
    margin: 10px;
    height: 35px;
    width: 350px;
    text-indent:20px; /* 光标和字体移动*/
}
.going{
    display: block;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.go{
    background: lightskyblue;
    border-radius: 20%;
    color: black;
}
.gone{
    display: block;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}
.bg{
    background: url("../images/chz5.png") no-repeat;
    display: block;
    width: 768px;
    height: 300px;
    margin-left: auto;
    margin-right: auto;

}
.tu{
    background: url("../images/chz2.png") no-repeat;
    display: block;
    background-size: auto 140px;
    height: 97px;
    margin-left: 310px;
}
.error{
    display: block;
    width: 200px;
    height: 20px;
    background: pink;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    margin-top: 40px;
}